AstraChat Alternatives

A messaging app for teams who see through the Earth!

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Mattermost is an open source alternative to Slack.

WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

free

Cisco Jabber lets you access presence, instant messaging (IM), voice, video, voice messaging, desktop sharing, and conferencing.

Open-source video calling and chat platform.

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.

Brosix will improve the efficiency and decrease the expenses of your business by providing you all-in-one features package and many control functions.

freemium $4.0 / Annually (Private Team Network, Full Control over user accounts)

Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once.

Fast, simple & secure messaging. Privacy that fits in your pocket.

Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.